Inking mechanism for printer slotter-multicolor rolls



G. N. RU LLO Dec. 29, 1953 INKING MECHANISM FOR PRINTER SLOTTER MULTICOLOR ROLLS 3 Sheets-Sheet 1 Filed April 15, 1952 N mm 1 N V EN TOR. 63964161 090720099 in D 29. 19 G. N. RULLO 2,664,045

INKING MECHANISM FOR PRINTER SLOTTER MULTICOLOR ROLLS Filed April 15, 1952 3 Sheets-Sheet 2 I N V EN TOR. $454754 Man 0w 45/4 :0

0% Vim Dec. 29, 1953 G. N. RULLO 2,664,045

INKING MECHANISM FOR PRINTER SLOTTER MULTICOLOR ROLLS Filed April 15, 1952 3 Sheets-Sheet 3 INVENTOR. 445mm, Mala; flaw registry with each other,

Patented Dec. 29, 1953 INKING MECHANISMFQR PRINTER SLOTTER-MULTICOLOR ROLLS Gabriel Nicholas Rull to- S. & S. Corruga o, Astoria, N. Y., assignor ted Paper Machinery 00.,

Inc., Brooklyn, N. Y., a. corporation of New York Application April 15, 1952, Serial No. 282,425

6 Claims.

My present invention relates to printer slotters and more particularly to an ink roll arrangement therefor which will permit a single inking system to be used alternately on a plurality of printing rolls.

Essentially my invention relates to the type of printer slotter described more specifically in Patent No. 2,121,105 and to the system indicated in Figure 3 thereof.

Heretofore in the construction and operation of, printer slotters it has been necessary to utilize a single inking system for any particular printing roll. Thus, where two inking systems are needed for the production of a two-color result, two printing rolls have been used for the purpose.

The primary object of my invention is the arrangement of an inking system so that the final form roll may be shifted from one printing roll to an adjacent printing roll as the need may arise.

In the operation of the printer slotter it is customary to provide at least one printing roll, a

scoring roll and a slotting roll together with associated rolls with which the aforementioned respective rolls cooperate.

Where a two-color printing process is to be performed then, two inking systems, each for an individual color, may be applied to the one printing roll. Where, however, the colored sections are not laterally spaced from each other but must be arranged in registry with each other, then it has been necessary to provide two separate printing rolls.

Consequently, it has become customary where a multi-color printing process is to be performed to provide separate printing rolls for connection with each inking system as shown, for example, in the aforesaid patent.

In the present invention the slotting roll may also have provision for mounting an ink applicating pad between the slotting blades and the form roll from one of the inking systems may be arranged so that it may be moved from registry with the printing roll to registry with the slotting roll.

Thus, where two colors are to be printed which are sufficiently laterally displaced from each other, the single printing roll may be used. Where, however, the colors are to be printed in the form roll of the inking system may be moved from the printing roll into registry with the printing pad on the slotting roll so that in effect two printing cylinders are provided, one of the printing cylinders also performing the function of a slotting roll.

By this means, therefore, it is possible to reduce the number of rolls in the printer slotter and thereby decrease the overall size of the machine. Since the floor space occupied by a printer slotter exclusive of feed mechanism and delivery mechanism is of the order of twelve feet wide by thirteen feet long and since the cylinders are of the order of thirteen inches in diameter, the reduction in size and in operating mechanism made possible by the omission of one roll makes possible economy in dimension and floor space occupied as well as in initial cost.

This reduction in floor space occupied is of prime iriportance in most plants which perform the printing and slotting operation on corrugated board.

The foregoing and many other objects ofmy invention will become apparent in the following description and drawings in which:

Figure l is a schematic View corresponding substantially to the schematic view of Figure 3 of the aforementioned Patent No. 2,121,105 showing the printing elements of the printer slotter of my invention.

Figure 2 is a detailed view showing the method of operation of the form roll which is the final roll that applies ink to the printing cylinders.

Figure 3 is a side view of the gear sector which is utilized to shift the position of the form roll.

Figure e is a cross-sectional view taken from line 4-4 of Figure 2 looking in the direction of the arrows.

Referring first to Figure 1, I have here shown an inking system which as above pointed out corresponds to the inking system shown in the above Patent No. 2,121,105.

The printing cylinder 10 and the slotter shaft I l are driven in the same manner as the printing cylinder 10 of the above Patent No. 2,121,105 and the slotter shaft 15 of the above patent.

The inking system for the printing cylinder comprises an ink fountain 20 having an adjustable blade 21 so arranged as to permit a specific quantity of ink to be spread on the fountain roll 22.

A ductor roll 23 is so arranged that it will oscillate translatorily into and out of engagement with the fountain roll 22. The ductor roll 23 is in continuous contact with the oscillating roll 24. The oscillating roll is in turn in continuous contact with the transfer roll 25 which in turn is in continuous contact with the spreader roll 26. The spreader roll continuously engages the form roll 21.

The form roll 2'! is so arranged that it engages the printing cylinder 10 and the ink transfer pad 30 thereon containing the die or mat having the particular material which is to be printed. The printing cylinder then prints the blanks which pass through the printer slotter.

The ductor roll 23 is mounted on the oscillatory bracket 32 which is pivoted around the axis of shaft 33, the said bracket 32 carrying the shaft 34 which supports the ductor roll 23. A rotating cam 40 is provided rotating on shaft 4I engaging against the cam follower 42 on bracket 32 and causing the bracket 32 to oscillate around its pivot around the axis of shaft 33 so that the ductor roll 23 alternately engages and disengages the fountain roll 22 while, however, it remains continuously in contact with the oscillating roll 24.

Thus, the ink is periodically picked up from the fountain roll 22 by the ductor roll 23. The oscillator roll is oscillated longitudinally of its axis 33 so that the ink 24 is spread smoothly over the oscillating roll 24. The ink is then transferred to the form roll 25 and then to the other oscillating roll 25 which further spreads the ink smoothly so that the form roll 27 in contact therewith and also in contact with the printing cylinder IIl may receive and deposit a smooth uniform coating of ink on the printing element 30 of the printing cylinder I0.

Appropriate means may be provided to ensure that the bracket 32 will follow the cam M.

The apparatus herein described for the printing cylinder I is duplicated for the additional inking apparatus at 50 which embodies the subject matter of my invention.

Again the ink fountain 29 is provided having the blade 2| and the blade adjustment IS. The fountain roll 22 is identical with the fountain roll 22 previously described. The ductor roll 23', the bracket 34, the cam 40', the oscillating roll 24, the transfer roll 25', the spreader roll 26' all correspond exactly to the similarly numbered elements of the first described inking system.

The form roll 2'! is, however, so mounted that it may where desired be arranged to engage the printing cylinder 50 as shown in Figure l. The form roll 21 of the inking system may, however, be moved to the position 21 shown in dotted lines in Figure 1 where it engages the slotting cylinder II. slotting cylinder II maybe provided with an ink pad 52 mounted between the slotting blades on the cylinder and so arranged that it will deposit ink on the blank passing through. The slotting blades are arranged, of course, so that they will cut appropriate slots at the portions of the blank which are to form corners of the box.

Consequently, since printed legends are usually applied on the fiat surface of the box, the inking pad 52 may be appropriately mounted in any known manner on the slotting cylinder II between the slotting blades.

The essence of the invention is the mounting of the form roll 21 of the inking system 50 so that it may be positioned to engage the printing cylinder ID or so that it may selectively be moved over to engage the slotting cylinder I I and the ink pad 52 thereon.

In this way the initial inking system 45 and the additional inking system 50 may both be utilized as shown in Figure 1 to cooperate with the single printing cylinder I0.

Thus, a two-color printing system may be utilized operable through inking pads on the single printing cyilnder I0.

Where, however, the inking arrangement is such that the two colors are not printed in a position which is laterally displaced from each other but must be printed in appropriate registry, then it becomes preferable to use an additional printing cylinder. For this purpose the form roll 21' of Figure 1 maybe swung to the dotted line position 21" of Figure 1 where the inking system 50 is now utilized to deposit ink on the ink pad 52 of the slotter roll II. The two colors may now be printed in registry with each other and without interfering or smearing each other.

Thus, as above pointed out, my invention is directed to the mounting of the form roll 21 of inking system 50 so that it may selectively be engaged with either printing cylinder I0 or slotter roll I I which then also acts as a printing cylinder.

In addition, it should be pointed out that the form roll 2'! may when it is desired not to use the inking system 50 at all be swung to an intermediate or neutral position.

In Figures 2, 3 and 4 I have shown one method by which the form roll 21' may be alternately positioned, either to engage the inking pad on the printing cylinder or the inking pad on the slotter roll II.

A shaft 60 is provided which in turn supports the bracket BI. The bracket SI carries the shaft 82 which in turn rotatably carries the form roll 21'. The bracket Si is provided with the spiral gear segment 64 which is secured thereto in any suitable manner as, for example, by the bolts 65. The spiral gear segment 64 meshes with the worm gear 61. Worm gear 51 is mounted on shaft 65 which is rotatable in appropriate bearings 69, I0. The bearings 68, 1G are provided with appropriate flanges II, I2 which may be secured by bolts I3, I3 to a portion of the main frame I5 of the machine.

The shaft 68 is provided with the squared ends so that a crank having an appropriate opening maybe mounted thereover to rotate the shaft 58 and hence rotate the worm gear 14, thereby rotating the spiral gear 64 and shifting the bracket 8 I Rotation of bracket BI about the shaft 60 will now shift the form roll 21' from the position shown in Figures 1 and 2 where it is in registry with printing cylinder I0 to the dotted line position 21" where it is in registry with the slotting cylinder II.

The frame 15 may also be provided with the lug having the adjustable stop member SI comprising a bolt threaded through the lug 90 with an appropriate lock nut to maintain the adjustment. The bracket 6| may also be provided with a depending lug 94 carrying the adjustable stop member 95 which comprises a bolt threaded through the lug 94 and an appropriate lock nut 96.

When the form roll 21' is swung to the dotted line position 21", the stop members 95 and SI interengage in order to establish an appropriate contact between the roll 21' and the cylinder I I.

A suitable stop member may be mounted 0n the other side of the machine to establish the appropriate adjustment of the form r011 21' with the printing cylinder I II.

By this means, therefore, a single inking system 50 maybe utilized selectively either to engage the printing cylinder I0 or the slotting cylinder II the only adjustment required being the operation of the squared end 80 of shaft 68 by a removable crank to move the final form roll 21' from engagement with one cylinder into ngagement with the other cylinder.

In e foregoing I have described my invention solely in connection with specific illustrative embodiments thereof. Since many variations and modifications of my invention will now be obvious to those skilled in the art, I prefer to be bound not by the specific disclosures herein contained but only by the appended claims.

I claim:

1. In a printer slotter having a printing cylinder and a slotting cylinder; an ink pad for said printing cylinder; an ink pad for said slotting cylinder; an inking system comprising an ink supply, a form roll and means for transferring and spreading ink from the ink supply to the form roll; said form roll being located between said cylinders and having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on said printing cylinder and being arranged in another of said selectable positions to engage the ink pad on the slotting cylinder.

2. In a printer slotter having a printing cylinder and a slotting cylinder; said cylinders being rotatable on axes parallel to each other; an ink pad for said printing cylinder; an ink pad for said slotting cylinder; an inking system comprising an ink supply, a form roll mounted for rotation on an axis parallel to and between the axes of the printing cylinder and the slotting cylinder and means for transferring and spreading ink from the ink supply to the form roll; said form roll having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on said printing cylinder and being arranged in another of said selectable positions to engage the ink pad on the slotting cylinder.

3. In a printer slotter having a pair of rotatable cylinders parallel to each other; an ink pad on each cylinder; an inking system comprising an ink supply, a form roll rotatable on an axis parallel to and between the axes of the cylinders and means for transferring and spreading ink from th ink supply to the form roll; said form roll having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on one of said cylinders and being arranged in another of said selectable positions to engage the ink pad on the other cylinder.

4. In a printing device having a pair of rotatable cylinders parallel to each other; an ink pad on each cylinder; an inking system comprising an ink supply, a

form roll rotatable on an axis parallel to and between the axes of the cylinders and means for transferring and spreading ink from the ink supply to the form roll; said form roll having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on one of said cylinders and being arranged in another of said selectable positions to engage the ink pad on the other cylinder.

5. In a printing device having a pair of rotatable cylinders parallel to each other; an ink pad on each cylinder; an inking system comprising an ink supply, a form roll rotatable on an axis parallel to and between the axes of the cylinders and means for transferring and spreading ink from the ink supply to the form roll; said form roll having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on one of said cylinders and being arranged in another of said selectable positions to engage the ink pad on the other cylinder, said form roll being mounted on a shaft; a bracket carrying said shaft; said bracket being rotatably mounted; and means for rotating said bracket to carry said form roll between said two last-mentioned selectable positions.

6. In a printing device having a pair of rotatable cylinders parallel to each other; an ink pad on each cylinder; an inking system comprising an ink supply, a form roll rotatable on an axis parallel to and between the axes of the cylinders and means for transferring and spreading ink from the ink supply to the form roll; said form roll having a plurality of selectable positions; said form roll being arranged in one of said selectable positions to engage the ink pad on one of said cylinders and being arranged in another of said selectable positions to engage the ink pad on the other cylinder, said form roll being mounted on a shaft; a bracket carrying said shaft; said bracket being rotatably mounted, and means for rotating said bracket to carry said form roll between said two last-mentioned selectable positions; said means comprising a spiral gear carried by said bracket; worm gear engaging said spiral gear; and apparatus for rotating said worm gear.

GABRIEL NICHOLAS RULLO.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 508,535 Turton Nov. 14, 1893 1,737,479 Simpson Nov. 26, 1929 2,858,284 Davidson et al Sept. 12, 1944 

